The invention relates to the technical field of
urban rail transit
vehicle braking systems, in particular to an auxiliary braking device of a multi-
marshalling hinged vehicle, a gas circuit board is arranged in a mounting box and provided with a plurality of gas circuit connectors used for being connected with an external gas circuit, and an auxiliary braking
assembly comprises a plurality of valve parts. The multiple valve components are all integrally installed on the gas circuit board and communicate with the multiple gas circuit connectors through internal gas circuits of the gas circuit board. All valve parts are integrated on the single gas circuit board and packaged into the mounting box, so that an independent
modular unit is formed, the overall integration degree is effectively improved,
pipe distribution and mounting work at the top of a vehicle unit is greatly simplified, potential leakage points are reduced, the overall reliability, sealing performance and environment protection capacity of a
system are improved, and meanwhile, the overall reliability, sealing performance and environment protection capacity of the
system are improved. The device can serve as an integral module to be installed on the tops of a head vehicle and a
tail vehicle, standardized arrangement of functions is achieved, and
batch production, testing and follow-up overhaul and maintenance are facilitated.